A team of police detectives today expect to scrutinize scores of unsolved murders of women in South Los Angeles, looking for possible links to the man they say is the Grim Sleeper serial killer.

At least 30 killings appear to have similarities to the 10 slayings Lonnie David Franklin Jr. already is accused of committing, police sources told the Los Angeles Times.

The victims in the unsolved cased included drug users, prostitutes and women with mental illness, but not all of them lived on the margins of society, The Times reported.

Franklin 57, made his first court appearance Thursday afternoon at the downtown Criminal Courts Building, facing 10 counts of murder and one count of attempted murder.

His arraignment was postponed to Aug. 9 at the request of defense attorney Regina Laughney.

Franklin was arrested Wednesday by a task force that compared DNA samples from Franklin and his son, who was arrested about a year ago.

Police Chief Charlie Beck said Thursday investigators used a state database that indicated Franklin’s son’s DNA was similar to samples from one of the Grim Sleeper crimes.

Detectives then obtained a sample of Franklin’s DNA from a discarded piece of pizza, which led to his arrest in connection with murders over a span of more than 20 years.

Franklin was arrested without incident at 9:20 a.m. Wednesday in front of his home in the 1700 block of West 81st Street, police said.

Before Franklin was identified as a suspect, investigators used forensic evidence to link the Grim Sleeper to eight murders between 1985 and 1988, and three murders between 2001 and 2007, to the same killer, Los Angeles police Detective Dennis Kilcoyne said.

The killer was dubbed the Grim Sleeper because of the almost 14-year break between killing sprees.

All but one of the killer’s victims were women, and many were prostitutes. Some were raped before being shot to death with a small-caliber handgun. Their bodies were dumped in alleys and trash bins in South Los Angeles, Inglewood and unincorporated county areas.

A woman who survived an attack in 1988 described the suspect as a black man in his 20s, driving an orange Ford Pinto. She said he picked her up, shot her in the chest, raped her, then pushed her out of his car.